Symptoms
An issue does not get synchronized, and it appears on the troubleshooting screen with the category 'Issue must be assigned' and the message 'assignee:Issue must be assigned'.
Cause
This error is probably caused because the ' allow unassigned issues' setting in JIRA is set to OFF.
Resolution
You can fix this problem in two ways:
-
Enable unassigned issues in JIRA
(this will also allow the target issue to be unassigned)
-
In the Backbone configuration,
edit the 'assignee' field, and check 'Ignore empty values for this user field'
. In this case, syncing from a issue with no assignee to an issue with an assignee will not remove the assignee in the target issue.